Locking structure of differential mechanism and differential mechanism

Abstract

The embodiment of the utility model provides a differential mechanism and a locking structure thereof, the locking structure comprises a shell (1), a half axle gear (2), a driving gear (3) and a return spring (4), the shell is provided with a slot position (011), the half axle gear (2) is positioned in the shell (1), the driving gear (3) is fixedly connected with a connecting plate (5) and is positioned between the half axle gear (2) and an electromagnetic coil (8), and the return spring (4) is connected with the shell (1) and is positioned between the half axle gear (2) and the electromagnetic coil (8). And the return spring (4) is placed in the slot position (011) and is positioned between the shell (1) and the connecting plate (5). According to the locking structure, the possibility of abrasion to the return spring (4) is effectively reduced, and the durability of the locking structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile component production and design, in particular to a differential locking structure and a differential. Background Art

[0002] The differential is a mechanism that enables the left and right wheels of a vehicle to move at different speeds. It is mainly used to prevent tire wear and lateral wheel drift when the vehicle is turning or driving on uneven roads, ensuring driving safety. The differential is generally a planetary gear structure. Its principle is that the planetary gears rotate on themselves, thereby transmitting the equidistant speed to the drive shaft through the half-shaft gears, so that the half-shafts at both ends rotate at different speeds.

[0003] However, in some special scenarios, such as when a vehicle is overcoming a protruding obstacle on the road, the wheel adhesion at one end of the vehicle is very small, while the wheel adhesion at the other end is very large. At this time, due to the existence of the differential function, all the power will be transmitted to the end with low adhesion, and the end with high adhesion will not get power, causing the vehicle to slip and be unable to move forward.

[0004] In order to solve the above problems, a locking structure is generally added to the differential. The main principle of the locking structure is to make the original structure of the differential invalid, so that the half-axles at both ends resume to rotate at the same speed, and then the wheels at both ends get the same power.

[0005] The locking structure in the prior art generally sets a return spring between the driving tooth and the half-shaft tooth. When locking is required, the driving tooth is pushed to engage with the half-shaft tooth, the planetary gear structure of the differential fails, and the half-shafts at both ends are connected as a whole to restore the same speed rotation; when locking is not required, the thrust on the driving tooth is canceled, the driving tooth is separated from the half-shaft tooth under the elastic force of the return spring, and the differential function is restored.

[0006] However, this design will cause the return spring to wear when the active tooth and the half-shaft tooth produce relative movement. In the long run, the spring structure will be damaged, resulting in the return spring being unable to reset the active tooth when the locking function needs to be released. Utility Model Content

[0007] One of the purposes of the utility model is to provide a locking structure of a differential and a differential, so as to solve the problem in the prior art that a return spring is worn when a driving tooth and a half-shaft tooth generate relative motion.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A locking structure of a differential, characterized in that the locking structure comprises:

[0010] A housing (1), wherein the housing is provided with a slot (011);

[0011] A half-shaft gear (2) is located inside the housing (1);

[0012] A driving gear (3), the driving gear (3) being fixedly connected to the connecting plate (5) and being located between the half-shaft gear (2) and the electromagnetic coil (8);

[0013] A return spring (4), the return spring (4) is placed in the slot (011) and is located between the housing (1) and the connecting plate (5).

[0014] Furthermore, the electromagnetic coil (8) comprises:

[0015] An electromagnetic coil housing (81), a coil (82), a movable armature (83), and a shaft sleeve (84).

[0016] Furthermore, the end surface of the housing (1), the electromagnetic coil housing (81) and the movable armature (83) form an electromagnetic circuit;

[0017] Alternatively, the electromagnetic coil (8) further comprises:

[0018] A stationary armature (85), the stationary armature (85) and the electromagnetic coil housing (81) and the movable armature (83) form an electromagnetic circuit; wherein the movable armature (83) is located between the shaft sleeve (84) and the coil (82).

[0019] Furthermore, the movable armature (83) includes a first groove structure (831), the shaft sleeve (84) includes a protrusion structure (841), and the first groove structure (831) matches the protrusion structure (841) in shape.

[0020] Furthermore, the driving gear (3) comprises a connecting seat (32), the connecting seat (32) comprises a sinker (33), and the connecting plate (5) is fixed to the connecting seat (32) via screws (6) and the sinker (33).

[0021] Furthermore, the housing (1) further comprises:

[0022] A second groove structure (012), wherein the second groove structure (012) matches the shape of the connecting seat (32).

[0023] Furthermore, the locking structure further comprises:

[0024] a limiting plate (9), wherein the electromagnetic coil (8) is located between the housing (1) and the limiting plate (9);

[0025] Alternatively, the locking structure further comprises:

[0026] The electromagnetic coil (8) is located between the housing (1) and the bearing (10).

[0027] Furthermore, the movable armature (83) includes a limiting structure (832), and / or the shaft sleeve (84) is provided with an oil groove (842).

[0028] Furthermore, the locking structure further comprises:

[0029] A first gasket (7) is located between the connecting plate (5) and the electromagnetic coil (8);

[0030] And / or, a second gasket (11) is located between the half-shaft gear (2) and the driving gear (3).

[0031] A differential comprises the locking structure as described in any one of the above items.

[0032] The utility model has the following advantages: by arranging the return spring between the housing (1) and the connecting plate (5), when locked, the connecting plate (5) drives the driving gear (3) to move under the action of the electromagnetic coil (8), so that the driving gear (3) is meshed with the half-shaft gear (2); when unlocked, the driving gear (3) is reset under the action of the return spring (4); no matter in the locked or unlocked state, the rotation of the housing (1) drives the driving gear (3) and the connecting plate (5) to rotate together, and there is no relative rotation between the housing (1) and the connecting plate (5), thereby effectively reducing the possibility of wear on the return spring (4). BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of components of a locking structure of a differential provided by an embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the housing structure of a locking structure of a differential provided in one embodiment of the utility model;

[0035] Figure 3 A schematic diagram of the half-axle gear structure of the locking structure of the differential provided by an embodiment of the utility model;

[0036] Figure 4 A schematic diagram of a driving gear structure of a locking structure of a differential provided in one embodiment of the utility model;

[0037] Figure 5 Another structural schematic diagram of a driving gear of a locking structure of a differential provided by an embodiment of the utility model;

[0038] Figure 6 A schematic diagram of the assembly of a driving gear and a connecting plate of a locking structure of a differential provided by an embodiment of the utility model;

[0039] Figure 7 A schematic diagram of the working principle of an electromagnetic coil provided in one embodiment of the utility model;

[0040] Figure 8 A schematic diagram of the working principle of the electromagnetic coil of the locking structure of the differential provided by an embodiment of the utility model;

[0041] Fig. 9 A schematic diagram of a movable armature structure of a locking structure of a differential provided in one embodiment of the utility model;

[0042] Fig.10 A schematic diagram of a shaft sleeve structure of a locking structure of a differential provided in one embodiment of the utility model;

[0043] Fig.11 A schematic diagram of the assembly of a movable armature and a shaft sleeve of a locking structure of a differential provided by an embodiment of the utility model;

[0044] Fig.12 A schematic diagram of the assembly of a locking structure of a differential provided by an embodiment of the utility model;

[0045] Fig.13 Another schematic diagram of the components of the locking structure of the differential provided by one embodiment of the utility model;

[0046] Fig.14 Another schematic diagram of the assembly of the locking structure of the differential provided by one embodiment of the utility model. DETAILED DESCRIPTION

[0047] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0048] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0049] Reference Figure 1, shows a schematic structural diagram of a locking structure of a differential according to an embodiment of the utility model, the locking structure comprising:

[0050] Shell 1, the shell is provided with a slot 011;

[0051] The housing 1 is the outer shell of the differential, which is used to protect the half-shaft gears, planetary gears and other structures inside the housing. Figure 2 The housing 1 shown has a slot 11 thereon which is a return spring slot for accommodating a return spring.

[0052] A half-shaft gear 2 is located inside the housing 1;

[0053] The half-shaft gear 2 is a gear that drives one half-shaft to rotate. The differential housing 1 generally also includes a planetary gear. The planetary gear transmits the equidistant rotation speed to the drive shaft through the half-shaft gear by rotating on its own, so that the half-shafts at both ends rotate at different speeds.

[0054] A driving gear 3, wherein the driving gear 3 is fixedly connected to the connecting plate 5 and is located between the side gear 2 and the electromagnetic coil 8;

[0055] The return spring 4 is placed in the slot 011 and is located between the housing 1 and the connecting plate 5 .

[0056] The driving gear 3 is separated from the half-shaft gear 2 when the differential is in an unlocked state, and meshes with the half-shaft gear 2 when it is in a locked state, making the structure of the planetary gear invalid and transmitting the power of one half-shaft to the other half-shaft, so that the half-shafts at both ends resume rotating at the same speed.

[0057] In one embodiment of the present invention, Figure 3 As shown, the side gear 2 has a passive meshing tooth 21 feature, such as Figure 4 The driving gear 3 shown has a driving meshing tooth 31 feature, and the passive meshing teeth 21 match the driving meshing teeth 31 in shape, so that the driving gear 3 meshes with the side gear 2 when the differential is locked.

[0058] In the embodiment of the utility model, the connecting plate 5 adopts a split design, and the driving gear 3 is fixedly connected to the connecting plate 5. The connecting plate 5 is mainly used to limit the return spring in the axial direction and serves as a thrust surface for pushing the driving gear 3 to move.

[0059] In an embodiment of the present utility model, the driving gear 3 includes a connecting seat 32 , the connecting seat 32 includes a sink 33 , and the connecting plate 5 is fixed to the connecting seat 32 via screws 6 and the sink 33 .

[0060] like Figure 5As shown, the connection seat 32 has a plurality of protruding features and a recessed platform 33 feature. The recessed platform 33 may also be provided with screw holes 34 for installing screws 6 to fix each connection plate 5 to each connection seat 32 respectively.

[0061] like Figure 6 The driving gear 3 and the connecting plate 5 are shown as an assembly diagram. The connecting plate 5 is fixed to the connecting seat 32 by screws 6. At this time, the return spring 4 is limited by the connecting plate 5 in the axial direction.

[0062] In practical applications, the driving gear 3 and the connecting plate 5 should not axially exceed the end surface of the housing 1 after being assembled, so as to avoid the main part of the electromagnetic coil 8.

[0063] The electromagnetic coil 8 is the power source for pushing the driving gear 3 to mesh with the driven gear 2 when the differential is locked. The main principle is to directly or indirectly push the driving gear 3 to move axially toward the driven gear 2 through electromagnetic force.

[0064] In one embodiment of the present utility model, the electromagnetic coil 8 comprises:

[0065] An electromagnetic coil housing 81, a coil 82, a movable armature 83, and a shaft sleeve 84; wherein the movable armature (83) is located between the shaft sleeve (84) and the coil (82).

[0066] In an embodiment of the present invention, the end surface of the housing 1, the electromagnetic coil housing 81 and the movable armature 83 form an electromagnetic circuit.

[0067] like Figure 7 As shown in the working principle diagram of the electromagnetic coil, when the electromagnetic coil 8 is working, generally four components, namely, the electromagnetic coil housing 81, the coil 82, the movable armature 83, and the stationary armature 85, are required to form an electromagnetic circuit. When the coil 82 is energized, the movable armature 83 moves toward the stationary armature 85.

[0068] In the embodiment of the utility model, no additional static armature 85 component is used, but the end surface of the housing 1 is used as the static armature. The working principle is as follows: Figure 8 As shown, when the coil 82 is energized, the movable armature 83 moves toward the end surface of the housing 1.

[0069] In practical applications, the housing 1 can be made of metal material so that the end surface of the housing 1 can function as a static armature. The metal material can be cast iron, such as QT500-7 ductile iron, or other materials, which are not limited in the present invention.

[0070] By eliminating the design of the stationary armature 85 component, the axial dimension is shortened, making the components of the entire locking structure more compact and the material cost lower. At the same time, the mountability of the locking structure is improved, and it can be applied to more differentials of different sizes.

[0071] The shaft sleeve 84 is nested with the movable armature 83 when assembled, and its main function is to protect the movable armature 83 to prevent the movable armature 83 from colliding with or rubbing against other components during reciprocating movement and causing damage.

[0072] In an embodiment of the present invention, the movable armature 83 includes a first groove structure 831 , and the shaft sleeve 84 includes a protrusion structure 841 . The first groove structure 831 matches the protrusion structure 841 in shape.

[0073] like Fig. 9 The movable armature 83 shown in FIG. 1 has a first groove structure 831 thereon, and Fig.10 The shaft sleeve 84 shown in the figure has a protruding structure 841 feature, and the first groove structure 831 matches the protruding structure 841 in shape, so that the shaft sleeve 84 and the movable armature 83 are mutually nested when the locking structure is assembled. The overall component after the assembly is as shown in FIG. Fig.11 shown.

[0074] In an embodiment of the present invention, the movable armature 83 includes a limiting structure 832 , and / or the shaft sleeve 84 is provided with an oil groove 842 .

[0075] like Fig. 9 The movable armature 83 shown in the figure also has a limiting structure 832 feature thereon, which is used to contact the housing 1 through the limiting structure 832 when the differential is locked, so as to limit the movable armature 83.

[0076] like Fig.10 The shaft sleeve 84 shown also has an oil groove 842 feature thereon, which is used to guide oil in the oil groove 842 to prevent the shaft sleeve 84 from wearing out with other parts during the rotation of the shaft body.

[0077] The return spring 4 is placed in the slot 011, between the housing 1 and the connecting plate 5, and is placed in the radial position of the connecting plate 5, and does not occupy the axial space alone. When the differential is locked, it is pressed by the driving gear 3 connected to the connecting plate 5. When the differential is unlocked, it applies elastic force to the driving gear 3 and returns the driving gear 3, and is limited by the connecting plate 5 in the axial direction.

[0078] In an embodiment of the present utility model, the housing 1 further comprises:

[0079] The second groove structure 012 matches the shape of the connecting seat 32 .

[0080] like Figure 2 As shown, the housing 1 further has a second groove structure 012 . When the differential is locked, the driving gear 3 extends into the second groove structure 012 through the connecting seat 32 to be engaged with the housing 1 .

[0081] In an embodiment of the utility model, the locking structure further includes:

[0082] The electromagnetic coil 8 is located between the housing 1 and the limiting plate 9 .

[0083] like Figure 1 As shown, the electromagnetic coil 8 is located between the housing 1 and the limiting plate 9, and the limiting plate 9 is used to limit the electromagnetic coil 8 in the axial direction.

[0084] In an embodiment of the utility model, the locking structure further includes:

[0085] The first gasket 7 is located between the connecting plate 5 and the electromagnetic coil 8 .

[0086] like Figure 1 As shown, the first gasket 7 is located between the connecting plate 5 and the electromagnetic coil 8 to prevent wear between the connecting plate 5 and the electromagnetic coil 8 .

[0087] In some embodiments of the present invention, the structural cross-sectional view of the locking structure after assembly is as follows: Fig.12 As shown, the driving gear 3 fixed to the connecting plate 5 by screws 6 is meshed with the half-shaft gear 2 inside the housing 1, the return spring 4 is located between the housing 1 and the connecting plate, the first gasket 7 is located between the connecting plate 5 and the electromagnetic coil 8, and the electromagnetic coil 8 is located between the connecting plate 5 and the limit plate 9.

[0088] The working principle of the locking structure of the embodiment of the utility model is described in detail below:

[0089] When the differential needs to be locked, the coil 82 is energized to generate electromagnetic force to push the movable armature 83 toward the end face of the housing 1 serving as the static armature. At the same time, the movable armature 83 drives the shaft sleeve 84 nested therewith. The shaft sleeve 84 applies pressure to the connecting plate 5, overcoming the elastic force applied by the return spring 4 to the connecting plate 5 and the driving gear 3 as a whole, so that the connecting plate 5 drives the driving gear 3 to move toward the end face of the housing 1.

[0090] It should be noted that, in actual applications, when the locking structure needs to work continuously, the current can be appropriately reduced to ensure that the force of the electromagnetic coil 8 is greater than the elastic force of the return spring 4. This method can reduce the heating of the coil and ensure the reliability of the electromagnetic coil 8.

[0091] Finally, the driving teeth 31 of the driving gear 3 mesh with the passive meshing teeth 21 of the half-shaft gear 2, and the driving gear 3 extends into the second groove structure 012 through the connecting seat 32 to be clamped with the shell 1, and the driving gear 3 drives the half-shaft gear 2 to rotate at the same speed, and transmits the output power to the half-shaft at one end behind the half-shaft gear 2, so that the differential structure fails and the half-shafts at both ends resume rotating at the same speed.

[0092] When the differential needs to be unlocked, the coil 82 is de-energized, and the return spring 4 applies an overall elastic force to the connecting plate 5 and the driving gear 3, thereby separating the driving gear 3 from the side gear 2, and the function of the differential returns to normal.

[0093] The utility model has the following advantages: by arranging the return spring between the housing 1 and the connecting plate 5, when locked, the connecting plate 5 drives the driving gear 3 to move under the action of the electromagnetic coil 8, so that the driving gear 3 is meshed with the half-shaft gear 2, and when unlocked, the driving gear 3 is reset under the action of the return spring 4. No matter in the locked or unlocked state, the rotation of the housing 1 drives the driving gear 3 and the connecting plate 5 to rotate together, and there is no relative rotation between the housing 1 and the connecting plate 5, which effectively reduces the possibility of wear on the return spring 4.

[0094] Reference Fig.13 , shows a schematic structural diagram of a locking structure of a differential of another embodiment of the utility model, the locking structure comprising:

[0095] Shell 1, the shell is provided with a slot 011;

[0096] A half-shaft gear 2 is located inside the housing 1;

[0097] A driving gear 3, wherein the driving gear 3 is fixedly connected to the connecting plate 5 and is located between the side gear 2 and the electromagnetic coil 8;

[0098] The return spring 4 is placed in the slot 011 and is located between the housing 1 and the connecting plate 5 .

[0099] The bearing 10, the electromagnetic coil 8 is located between the housing 1 and the bearing 10;

[0100] The bearing 10 is used to reduce the friction coefficient of the shaft rotation, improve its rotation accuracy, and limit the electromagnetic coil 8 in the axial direction.

[0101] A second gasket 11 is located between the side gear 2 and the driving gear 3;

[0102] The second gasket 11 is used to reduce the possibility of wear between the side gear 2 and the driving gear 3 .

[0103] The electromagnetic coil 8 also includes:

[0104] The static armature 85, the static armature 85, the electromagnetic coil housing 81 and the movable armature 83 form an electromagnetic circuit.

[0105] In the embodiment of the present utility model, Fig.13 As shown, the connecting plate 5 adopts a single-piece design and is fixed to the active tooth by screws 6. The return spring 4 is arranged between the housing 1 and the connecting plate 5 and is limited by the connecting plate 5 in the axial direction.

[0106] The structural cross-sectional view of the locking structure of the embodiment of the utility model after assembly is as follows Fig.14 As shown, the driving gear 3 fixed to the connecting plate 5 by screws 6 is meshed with the half-shaft gear 2 inside the housing 1, the return spring 4 is located between the housing 1 and the connecting plate 5, the first gasket 7 is located between the connecting plate 5 and the electromagnetic coil 8, and the electromagnetic coil 8 is located between the connecting plate 5 and the bearing 10.

[0107] The working principle of the locking structure of the embodiment of the utility model is described in detail below:

[0108] When the differential needs to be locked, the coil 82 is energized to generate electromagnetic force to push the movable armature 83 to fit with the static armature 85. At the same time, the movable armature 83 drives the shaft sleeve 84 nested therewith. The shaft sleeve 84 applies pressure to the connecting plate 5, overcoming the elastic force applied by the return spring 4 to the connecting plate 5 and the driving gear 3 as a whole, so that the connecting plate 5 drives the driving gear 3 to move toward the end face of the housing 1.

[0109] It should be noted that, in actual applications, when the locking structure needs to work continuously, the current can be appropriately reduced to ensure that the force of the electromagnetic coil 8 is greater than the elastic force of the return spring 4. This method can reduce the heating of the coil and ensure the reliability of the electromagnetic coil 8.

[0110] Finally, the driving teeth 31 of the driving gear 3 mesh with the passive meshing teeth 21 of the half-shaft gear 2, and the driving gear 3 extends into the second groove structure 012 through the connecting seat 32 to be clamped with the shell 1, and the driving gear 3 drives the half-shaft gear 2 to rotate at the same speed, and transmits the output power to the half-shaft at one end behind the half-shaft gear 2, so that the differential structure fails and the half-shafts at both ends resume rotating at the same speed.

[0111] The utility model has the following advantages: by arranging the return spring between the housing 1 and the connecting plate 5, when locked, the connecting plate 5 drives the driving gear 3 to move under the action of the electromagnetic coil 8, so that the driving gear 3 is meshed with the half-shaft gear 2, and when unlocked, the driving gear 3 is reset under the action of the return spring 4. No matter in the locked or unlocked state, the rotation of the housing 1 drives the driving gear 3 and the connecting plate 5 to rotate together, and there is no relative rotation between the housing 1 and the connecting plate 5, which effectively reduces the possibility of wear on the return spring 4.

[0112] In some embodiments of the present invention, a differential is further provided, the differential comprising a locking structure as described in any one of the above items.

[0113] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A locking structure of a differential, characterized in that: The locking structure comprises: A housing (1), wherein the housing is provided with a slot (011); A half-shaft gear (2) is located inside the housing (1); A driving gear (3), the driving gear (3) being fixedly connected to the connecting plate (5) and being located between the half-shaft gear (2) and the electromagnetic coil (8); A return spring (4), the return spring (4) is placed in the slot (011) and is located between the shell (1) and the connecting plate (5).

2. The locking structure according to claim 1, characterized in that: The electromagnetic coil (8) comprises: An electromagnetic coil housing (81), a coil (82), a movable armature (83), and a shaft sleeve (84); wherein the movable armature (83) is located between the shaft sleeve (84) and the coil (82).

3. The locking structure according to claim 2, characterized in that: The end surface of the housing (1), the electromagnetic coil housing (81) and the movable armature (83) form an electromagnetic circuit; Alternatively, the electromagnetic coil (8) further comprises: A stationary armature (85), the stationary armature (85) and the electromagnetic coil housing (81) and the movable armature (83) form an electromagnetic circuit.

4. The locking structure according to claim 2, characterized in that: The movable armature (83) comprises a first groove structure (831), and the shaft sleeve (84) comprises a protrusion structure (841), and the first groove structure (831) matches the protrusion structure (841) in shape.

5. The locking structure according to claim 1, characterized in that: The driving gear (3) comprises a connecting seat (32), the connecting seat (32) comprises a sinking platform (33), and the connecting plate (5) is fixed to the connecting seat (32) via screws (6) and the sinking platform (33).

6. The locking structure according to claim 5, characterized in that: The housing (1) further comprises: A second groove structure (012), wherein the second groove structure (012) matches the shape of the connecting seat (32).

7. The locking structure according to claim 1, characterized in that: The locking structure further comprises: a limiting plate (9), wherein the electromagnetic coil (8) is located between the housing (1) and the limiting plate (9); Alternatively, the locking structure further comprises: The electromagnetic coil (8) is located between the housing (1) and the bearing (10).

8. The locking structure according to claim 2, characterized in that: The movable armature (83) includes a limiting structure (832), and / or the shaft sleeve (84) is provided with an oil groove (842).

9. The locking structure according to claim 1, characterized in that: The locking structure further comprises: A first gasket (7) is located between the connecting plate (5) and the electromagnetic coil (8); And / or, a second gasket (11) is located between the half-shaft gear (2) and the driving gear (3).

10. A differential, characterized in that: The differential includes a locking structure according to any one of claims 1 to 9.

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